EP0945921B1 - Connecteur de face arrière à haute fréquence - Google Patents

Connecteur de face arrière à haute fréquence Download PDF

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Publication number
EP0945921B1
EP0945921B1 EP99302253A EP99302253A EP0945921B1 EP 0945921 B1 EP0945921 B1 EP 0945921B1 EP 99302253 A EP99302253 A EP 99302253A EP 99302253 A EP99302253 A EP 99302253A EP 0945921 B1 EP0945921 B1 EP 0945921B1
Authority
EP
European Patent Office
Prior art keywords
connector
conductive elastomeric
flex film
module
biasing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99302253A
Other languages
German (de)
English (en)
Other versions
EP0945921A2 (fr
EP0945921A3 (fr
Inventor
Andrew H. Strange
Wayne S. Alden Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Installation Products International LLC
Original Assignee
Thomas and Betts International LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomas and Betts International LLC filed Critical Thomas and Betts International LLC
Publication of EP0945921A2 publication Critical patent/EP0945921A2/fr
Publication of EP0945921A3 publication Critical patent/EP0945921A3/fr
Application granted granted Critical
Publication of EP0945921B1 publication Critical patent/EP0945921B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7082—Coupling device supported only by cooperation with PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1452—Mounting of connectors; Switching; Reinforcing of back panels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/7047—Locking or fixing a connector to a PCB with a fastener through a screw hole in the coupling device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/771—Details
    • H01R12/772—Strain relieving means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection

Definitions

  • a variety of backplane connectors are known in the art. As connection densities increase there is a demand to provide a reliable manner of interconnecting a large number of densely organized printed circuit boards pads to a connector of minimal size while still providing a high degree of reliability.
  • Prior attempts at providing such a connector having a large number of interconnects in a small amount of space have included connectors that incorporate a housing module secured to a first printed circuit board and a stiffener module secured to a second printed circuit board.
  • Other attempts have provided a connector that permits parallel interconnect for interconnecting two circuit boards in parallel planes. These connectors require multiple parts making manufacture and assembly of the connectors difficult and time consuming.
  • connectors suffer from stresses applied to the connectors from insertion of the connector to a mating printed circuit board which reduces the reliability of the connector.
  • These connectors also must provide proper alignment of the connector interconnect to the densely arranged pads of the circuit board in order to provide a high degree of reliability.
  • the present invention provides a high-speed backplane connector comprising: a housing; a flex film including a plurality of conductive traces, said flex film disposed within said housing; a first biasing module attached to a first portion of said flex film; a second biasing module attached to a second portion of said flex film; a first biasing element disposed between said housing and said first biasing module and supporting said first biasing module within said housing, and a second biasing element disposed between said housing and said second biasing module and supporting said second biasing module within said housing; the connector characterised by: a first conductive elastomeric contact module having a first side and a second side, said first side in electrical communication with said flex film, said second side capable of interconnection with a printed circuit; a second conductive elastomeric contact module having a first side and a second side, said first side in electrical communication with said flex film, said second side capable of interconnection with a printed circuit board, said second conductive elastomeric contact module in
  • the connector may be used for interconnecting circuit boards to a backplane or interconnecting a mother board to daughter board.
  • the interconnect of the connector comprising the flex film and the conductive elastomeric contact modules, floats within the housing thereby providing more accurate alignment to a set of oriented circuit board contacts and is isolated from stresses associated with the insertion of the connector to a mating printed circuit board.
  • the connector 10 includes a housing 20, biasing elements 50 and 60, a flex film 30, conductive elastomeric contact modules 35 (shown in fig. 4) and biasing modules 40 and 45.
  • the connector 10 has a front surface 12 and a bottom surface 14.
  • the bottom surface 14 is disposed on a first printed circuit board (PCB), while front conductive surface 12 extends from an end of the first printed circuit board and can be mated to a second printed circuit board such as a backplane or mother board.
  • PCB printed circuit board
  • the flex film 30 includes a plurality of conductive traces for providing electrical communication between a first conductive elastomeric contact module 35 located at the front surface 12 of the connector housing 20 and a second similar conductive elastomeric contact module (shown in Fig. 1C) at the bottom surface 14 of the connector housing 20.
  • the flex film 30 may be realized as a multilayer film and include ground planes and/or strip line traces. The ability to support controlled impedance connections is also provided, since ground connections can be made anywhere on the conductive elastomeric contact modules 35 and/or the flex film 30.
  • the first conductive elastomeric contact module 35 connects to the first end of the flex film 30 and both the first conductive elastomeric contact module 35 and the first end of the flex film 30 are mounted on an external face of a first biasing module 40.
  • the second conductive elastomeric contact module 35 connects to the second end of the flex film 30 and an external face of a second biasing module 45.
  • the first conductive elastomeric contact module 35 is positioned along a first plane
  • the second conductive elastomeric contact module is positioned along a second plane and the planes are generally perpendicular with respect to each other.
  • alignment pins 70 are used to mechanically secure the flex film 30 and conductive elastomeric contact modules to respective biasing modules 40 and 45. In this manner, electrical communication with a plurality of contacts on the surface of a first PCB are provided at generally perpendicular orientation with to the first PCB in order to mate with a second CPB such as a backplane or mother board.
  • the first side of the conductive elastomeric contact modules interface to the flex film 30, and the second side of the conductive elastomeric contact module interface to a printed circuit board set of contacts.
  • the conductive elastomeric contacts could be molded directly onto the flex film to eliminate the conductive elastomeric contact modules (shown in Fig. 2). Further, the conductive elastomeric contact modules could also include power and ground contacts.
  • a plurality of biasing elements 50 and 60 are disposed between the biasing modules 40 and 45 and the housing 20.
  • alignment of the connector 10 to the PCB is centered on the board by capturing of the alignment pins 70 that also serve to secure the conductive elastomeric contact module and flex film to the biasing module. Since the connector interconnect floats within the connector housing, each module aligns individually, thereby improving the reliability while also making installation and removal of the PCB to or from the connector easier.
  • power and ground connections can be made via the conductive elastomeric contact modules 35 or by way of external fasteners 80 and 80' which may be situated in recesses in the housing 20.
  • the connector 10 is shown mechanically secured to a first PCB 90 by way of a backing plate 95.
  • the backing plate 95 is positioned on the underside of the PCB 90 opposite the connector 10.
  • a mechanical fastener 100 such as a bolt, is used to secure the connector housing 10 to the backing plate 95 through the PCB 90.
  • a conventional card cage design may be used, or alternately a custom card cage locking mechanism could be developed.
  • the connector 10 is mated with a cooperating printed circuit board, the forces applied to the printed circuit board 90 are directed to the connector housing 20 and surrounding mounting members and not the connector interconnect itself. In this manner the floating interconnect is subjected to less mechanical stress and strain and the reliability of the connector is improved.
  • An extendable frame may be utilized to hold multiple connector modules. The connector modules can be stacked vertically or horizontally in the frame.
  • the backplane or motherboard latches or locks in place to the connector 10 with the biasing elements providing the force needed to maintain the electrical connections between the connector and the second PCB, thereby eliminating the need for mounting a fastener behind the second PCB.
  • the second PCB is plugged into the connector 10 from the front and can be latched or locked from either the front or from the back.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (21)

  1. Connecteur de fond de panier à grand débit, comprenant :
    un boítier (20) ;
    un film souple (30) incluant une pluralité de rubans conducteurs, ledit film souple (30) étant disposé à l'intérieur dudit boítier (20) ;
    un premier module (40) de rappel assujetti à une première partie dudit film souple (30) ;
    un second module (45) de rappel assujetti à une seconde partie dudit film souple (30) ;
    un premier élément (50) de rappel disposé entre ledit boítier (20) et ledit premier module (40) de rappel et supportant ledit premier module (40) de rappel à l'intérieur dudit boítier (20), et un second élément (60) de rappel disposé entre ledit boítier (20) et ledit second module (45) de rappel et supportant ledit second module (45) de rappel à l'intérieur dudit boítier (20) ;
    le connecteur étant caractérisé par :
    un premier module (35) de contact en élastomère conducteur comportant un premier côté et un second côté, ledit premier côté étant en communication électrique avec ledit film souple (30), ledit second côté permettant une interconnexion avec un circuit imprimé ;
    un second module (35) de contact en élastomère conducteur comportant un premier côté et un second côté, ledit premier côté étant en communication électrique avec ledit film souple (30), ledit second côté permettant une interconnexion avec une carte à circuit imprimé, ledit second module (35) de contact en élastomère conducteur étant en communication électrique avec ledit premier module (35) de contact en élastomère conducteur par l'intermédiaire dudit film souple (30) ;
    ledit premier élément (50) de rappel supportant ledit premier module (40) de rappel à l'intérieur dudit boítier (20), et ledit second élément (60) de rappel supportant ledit second module (45) de rappel à l'intérieur dudit boítier (20), de sorte que lesdits premier et second modules (40, 45) de rappel, lesdits premier et second modules (35, 35) de contact en élastomère conducteur et ledit film souple (30) flottent à l'intérieur dudit boítier (20).
  2. Connecteur selon la revendication 1, dans lequel ledit premier module (35) de contact en élastomère conducteur comprend un substrat incluant une pluralité de contacts en élastomère conducteur.
  3. Connecteur selon la revendication 1 ou la revendication 2, dans lequel ledit second module (35) de contact en élastomère conducteur comprend un substrat incluant une pluralité de contacts en élastomère conducteur.
  4. Connecteur selon la revendication 1, dans lequel ledit premier module (35) de contact en élastomère conducteur comprend un polymère incluant une pluralité de contacts en élastomère conducteur disposés dans celui-ci.
  5. Connecteur selon la revendication 1 ou la revendication 4, dans lequel ledit second module (35) de contact en élastomère conducteur comprend un polymère incluant une pluralité de contacts en élastomère conducteur disposés dans celui-ci.
  6. Connecteur selon la revendication 1, dans lequel ledit premier module (35) de contact en élastomère conducteur est d'un seul tenant avec ledit film souple (30).
  7. Connecteur selon la revendication 1 ou la revendication 6, dans lequel ledit second module (35) de contact en élastomère conducteur est d'un seul tenant avec ledit film souple (30).
  8. Connecteur selon l'une quelconque des revendications 1 à 7, dans lequel ledit second côté dudit premier module (35) de contact en élastomère conducteur est disposé globalement orthogonal audit second côté dudit second module (35) de contact en élastomère conducteur.
  9. Connecteur selon l'une quelconque des revendications 1 à 8, dans lequel ledit premier élément (50) de rappel comprend au moins un ressort.
  10. Connecteur selon l'une quelconque des revendications 1 à 9, dans lequel ledit second élément (60) de rappel comprend au moins un ressort.
  11. Connecteur selon l'une quelconque des revendications 1 à 10, dans lequel des connexions de puissance et de masse sont établies par l'intermédiaire dudit film souple (30).
  12. Connecteur selon l'une quelconque des revendications 1 à 10, dans lequel des connexions de puissance et de masse sont établies par l'intermédiaire dudit premier module (35) de contact en élastomère conducteur et dudit second module (35) de contact en élastomère conducteur.
  13. Connecteur selon la revendication 1, comprenant en outre au moins un contact extérieur (80) comportant une première extrémité et une seconde extrémité, ladite première extrémité étant disposée adjacente audit second côté dudit premier module (35) de contact en élastomère conducteur, ladite seconde extrémité étant disposée adjacente audit second côté dudit second module (35) de contact en élastomère conducteur, et dans lequel une connexion de puissance ou de masse est établie par l'intermédiaire dudit au moins un contact extérieur (80).
  14. Connecteur selon l'une quelconque des revendications 1 à 13, dans lequel ledit film souple (30) comprend un film souple multicouche.
  15. Connecteur selon la revendication 14, dans lequel ledit film souple multicouche (30) inclut un plan de masse.
  16. Connecteur selon la revendication 14, dans lequel ledit film souple multicouche (30) inclut un plan de puissance.
  17. Connecteur selon la revendication 1, dans lequel ledit film souple (30) inclut au moins un ruban de ligne triplaque.
  18. Connecteur selon l'une quelconque des revendications 1 à 17, comprenant en outre au moins une broche (70) d'alignement disposée sur la première extrémité dudit film souple (30).
  19. Connecteur selon l'une quelconque des revendications 1 à 18, comprenant en outre au moins une broche (70) d'alignement disposée sur la seconde extrémité dudit film souple (30).
  20. Connecteur selon l'une quelconque des revendications 1 à 19, dans lequel ledit connecteur peut être monté sur un premier côté d'une carte à circuit imprimé, et comprenant en outre :
    une contre-plaque (95) pouvant être disposée sur un second côté d'une carte à circuit imprimé ; et
    un dispositif de fixation (100) servant au couplage mécanique dudit connecteur et de ladite contre-plaque (95).
  21. Connecteur selon la revendication 20, dans lequel le dispositif de fixation (100) comprend une vis.
EP99302253A 1998-03-23 1999-03-23 Connecteur de face arrière à haute fréquence Expired - Lifetime EP0945921B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7900898P 1998-03-23 1998-03-23
US79008P 1998-03-23

Publications (3)

Publication Number Publication Date
EP0945921A2 EP0945921A2 (fr) 1999-09-29
EP0945921A3 EP0945921A3 (fr) 2001-08-08
EP0945921B1 true EP0945921B1 (fr) 2005-06-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99302253A Expired - Lifetime EP0945921B1 (fr) 1998-03-23 1999-03-23 Connecteur de face arrière à haute fréquence

Country Status (5)

Country Link
US (1) US6062872A (fr)
EP (1) EP0945921B1 (fr)
JP (1) JP3035291B2 (fr)
CA (1) CA2266308A1 (fr)
DE (1) DE69925773T2 (fr)

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Also Published As

Publication number Publication date
EP0945921A2 (fr) 1999-09-29
EP0945921A3 (fr) 2001-08-08
DE69925773T2 (de) 2005-12-01
JP3035291B2 (ja) 2000-04-24
JPH11354224A (ja) 1999-12-24
US6062872A (en) 2000-05-16
CA2266308A1 (fr) 1999-09-23
DE69925773D1 (de) 2005-07-21

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